PENGARUH THRUST DEDUCTION FACTOR DAN WAKE FRACTION TERHADAP EFISIENSI PROPULSI AKIBAT PERUBAHAN DRAFT KAPAL

This study is to investigate propulsion efficiency due changes in draught of ship using data series and theoretical approach. A hard chain rescue boat with triplet screw was used for the examine effect thrust deduction factor wake fraction its relevance by observing hull propeller interaction based on openwater test Wageningen Data Series cavitations analysis has been neglected. The done hydrodynamics planning intersection between characteristic curve fixed pitch propeller. result indicated that are very influential value which one contributing change 1% - 5%.